Malicious RTF — malware analysis report

Static analysis result for SHA-256 2b9a977a27eec8a4…

MALICIOUS

RTF

100.3 KB Created: 2021-07-16 07:42:00
MD5: 9a5a258553049f8f6054b6248de2b367 SHA-1: 3e24e8fed56981a0cf7c0b8bd833ce7c534ac3e4 SHA-256: 2b9a977a27eec8a404eaa29bc396e2bcbe913d5a056450fb086a9bc3a17ff34c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating a malicious intent to compromise the user's system.

Heuristics 4

  • CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882
    Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003163.bin
0649b8caa42cd45ae782fef9d23587f6ba56a058c6a060c0da1e2a7ca0483d0f		 rtf-objdata-decoded RTF \objdata at offset 0x3163 3629 bytes

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